| Philip O'Reilly | |
| Fullname: | Philip O'Reilly |
| Birth Date: | 1980 7, df=yes |
| Birth Place: | New Zealand |
| Height: | 1.9m (06.2feet) |
| Weight: | 100kg (200lb) |
| Position: | Flanker |
| Repyears1: | 2005–2009 |
| Repcaps1: | 11 |
| Reppoints1: | 35 |
| Repupdate: | 6 May 2021 |
is a former Japanese rugby union player who played as a flanker.[1] He was named in the Japan squad for the 2007 Rugby World Cup, making two appearances in the tournament.[2] He made a further nine appearances for Japan in his career, scoring seven tries.[3]